China's operational new-type energy storage capacity reached 167 GW/435 GWh at the end of September 2026, 63% above the level of a year earlier, according to figures the National Energy Administration (NEA) released on October 30.
The data were presented at the agency's quarterly press conference on national energy development. The new-type category spans electrochemical, compressed-air and other emerging storage systems, and does not include conventional pumped hydro.
Measured against 135.93 GW/351.12 GWh at the end of 2025, the latest total implies net additions of roughly 31 GW/84 GWh during the first nine months of 2026.
Longer duration, more operating hours
Average storage duration climbed to 2.61 hours, about 0.27 hours more than a year earlier. Equivalent utilization hours over the nine-month period came to around 915, roughly 10 hours above the same stretch of 2025. Read together, the NEA numbers suggest that expansion is being accompanied by changes in how systems are configured and used, rather than by growth in installed capacity alone.
The agency attributed the pace of development to government policy, technology innovation, industrial supply chains and mounting demand for flexibility in the power system.
Renewables sharpen the need for flexibility
Combined wind and solar generating capacity passed 2.01 TW by the end of September, equal to about 48.7% of China's total installed power capacity. As variable output expands, storage is increasingly required to soak up surplus electricity, shift generation into higher-demand periods and provide fast-response grid services.
The composition of the market is shifting as well. Official 2025 figures put independent storage facilities at 51.2% of cumulative new-type installations, projects rated at 100 MW or above at 72% of installed capacity, and systems of at least four hours at 27.6%. Lithium-ion batteries still supplied about 96% of installed new-type capacity, while compressed air, flow batteries and other technologies are gradually widening their share.
The gap between the 2.61-hour average and the 27.6% of capacity already configured for four hours or more is one the 15th Five-Year Plan for power system development addresses by placing more weight on longer-duration systems.
Market rules and 2030 targets
Reforms are expected to reinforce these trends. China has been developing arrangements under which independent storage operators earn revenue from electricity trading, ancillary services and capacity remuneration, gradually loosening reliance on the mandatory storage requirements tied to renewable projects.
Under the same five-year plan, new-type storage capacity is targeted at 300 GW by 2030, with greater stress on longer-duration systems, grid-forming capability and better operational efficiency. Targets of this kind describe intent rather than completed build-out.
Storage as a short-term balancing resource
The contribution is already apparent in grids with heavy renewable penetration. In western Inner Mongolia, the grid operator reported 20.23 GW/70.47 GWh of operational storage capacity in October; during emergency dispatch operations, storage supplied up to 12.25 GW, equivalent to 33% of the grid's electricity demand at that time.
Such episodes illustrate how storage can furnish substantial short-term balancing capacity in systems with high shares of wind and solar. For other countries expanding renewable generation, China's deployment offers experience in large-scale storage manufacturing, grid integration and centralized dispatch.